bytedeco/javacv

Accessing points returned by findContours()

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#1,270 opened on Aug 13, 2019

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enhancementhelp wanted

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Description

In C++ findContours() returns a vector<vector<Point> > which makes accessing each point in a contour quite easy, but I see no way of doing such thing with JavaCV? Is there a way to access these point with MatVectors and Mats?

Contributor guide

Research direction
Examine JavaCV's CvContour class and MatVector to find a method to access individual points. Alternatively, convert the contour to a Java array using OpenCV's Java wrapper.
Tech stack
java
Domain
computer vision
Issue type
Documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaOpenCV basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80